Numeracy
15 + 3( 4 – 8)
What is 3?
Is the ordered pair (-2, -5) a solution of the system?
2x – y = 1
3x = 2y -16
What is NO?
The approximate number of accidents in one month, N, involving drivers between 16 and 30 years of age inclusive can be approximated by the equation or function N(a) = 2a^2 – 80a + 5000 where a = age of the driver. Calculate N(20).
What is 4,200 accidents?
Find the x intercepts of 7x2-7=0.
What is x= 1 and -1?
Find 10 P5
What is 30240?
3.6% of 1090
What is 39.24?
Find x and y intercepts of this linear equation. 6x – 7y = -21
What is x-int= -7/2 and y-int= 3
If y varies directly as x and y = 18 when x = 6, find y when x = 21.
What is 63?
Find the y intercept of this quadratic graph: y = 3x2-8x-9.
How many different committees can be formed from 6 teachers and 50 students if the committee is to consist of two teachers and three students?
What is 294,000?
25% of what number is 160
What is 640?
Name the solution to this system.
2x + 3y = 5 4y = 8x – 7
What is (32/41,16/13)
The speed of a car around a track varies inversely as the time it takes to go one lap around the track. When Car #44 is traveling 170 mph, it takes 1.5 minutes to complete one lap. If he is traveling 150 mph, how long will it take him to complete one lap?
What is 1.7 minutes?
Factor the following: 25x2 – 81
What is (5x-9) (5x+9)
You earn the following amounts driving for Uber for 3 weeks of a month: $253, $310, $185. What would you need to earn the 4th week of the month to average $250 per month?
What is $252?
If f(x)= x2+5, find f(-3)
What is 14?
The treasurer of a student council reported that the receipts for the concession stand totaled $1660 and that 560 people purchased milkshakes. If students paid $2.50 per small milkshakes and students paid $3.50 for large milkshakes, how many of each milkshake were sold?
What is 300 small and 260 large
Write the equation of the line in slope-intercept form, that passes through (2,-3) with slope of ½.
What is y= 1/2x - 4?
What is the vertex and y-intercept : f(x)= -(x-4)2+5
vertex= (4, 5) and y-int= (0, -11)
A bank marketing research study about customer behavior finds that the number of times people use a debit card in a year is normally distributed with a mean of 89 with a standard deviation of 12. What percent of customer use a debit card less than 80 times per year?
What is 22.7%?
20/9 divided by 5/3
What is 4/3?
Two vats contain milk, one sample testing 3% butterfat and the other testing 7% butterfat. How much milk should be taken from each vat to produce a 10-gallon mixture which will test 4.5% butterfat?
What is 6.25 gallons of 3% milk, 3.75 gallons of 7% milk?
What is the interval of increasing of y= -x2 - 5
What is (-infinity, 0] ?
For the expression 1/(x2 -4) which of the following represents the excluded values?
x cannot equal 2 and -2
The following data set represents the gas mileage of cars over a six month period: 23 22 21 23 18 19 35 32 28 35
What is 11?