Solving Equations
(w/4) – 2 = 12
What is w=56?
|r + 3| > 7
What is r > 4 or r < –10 ?
A 4-ft girl casts an 8-ft shadow. She is standing next to a tree with a 24-ft shadow. How tall is the tree?
What is 12 feet?
Is this set of ordered pairs a function? {(–13, –8), (9, –8), (15, 7), (26, 13)}?
What is yes, it is a function?
Find the slope that goes through (–3/4, 5) and (5/4, 2).
What is –3/2?
(5k+3)/4 = –10
What is k=–8.6?
20 < –5y
What is –4 > y?
Stuco spent $235.20 on the dance; this was 80% of their budget. How much was the total budget?
What is $294?
Write a function rule to describe the cost of mailing a package if it costs $2.25/pound to mail it.
What is c(p) = 2.25p where c=cost and p=pounds?
Write in slope-intercept form: 2x – 3y = 9
What is y = (2/3)x – 3?
Solve for C.
F = 32 + (9/5)C
What is C = (5/9)(F–32) ?
6(x – 11) – 4x < –72
What is x < –3 ?
–5/p = –6/12
Find the common difference and the next three terms in this sequence: –5, –3.5, –2, –0.5, . . .
What is 1.5; 1, 2.5, 4?
Write an equation in slope-intercept form for the line through (7, 5) and (–1, 1/5).
What is y = (3/5)x + (4/5) ?
Two friends with walkie-talkies travel in opposite directions. One is going 25 mph while the other travels 30 mph. The range of their walkie-talkies is 110 miles. How much time will pass before they can no longer make contact?
What is two hours?
Rosie T. Kain is selling R-K shirts. The equipment costs $75. If she makes a profit of $6 per shirt, how many shirts must she sell before she earns a profit of more than $135?
What is 36 shirts?
Shirts > 35
65mph = ____ ft/min
5280 feet = 1 mile
What is 5720 ft/min?
The cost of renting a camera varies directly with the length of time you rent it. If the hourly cost is $6 and you receive $2 change from paying with a $50 bill, how long did you rent the camera?
What is 8 hours?
Write an equation in point-slope form that passes through (0, 1) and has a slope of –2.
What is y – 1 = –2x ?
If –2d + 5 = –31, what is the value of 3d – 9?
What is 45?
6|8 – y| = 36
What is y=2 or y=14?
24 is 75% of what number?
What is 32?
Find the constant of variation: –6y = –3x
What is k=0.5?
Write an equation in slope-intercept form for a line that passes through the point (5, –1) and is perpendicular to y = 4x – 7.
What is y = (–1/4)x + (1/4) ?