M
x + 12, when x = 3
What is 15?
2x + 4 when x = 3
What is 10?
x = 3, y = 5 and z = 2
x(y + z)
What is 21?
The perimeter of a triangle is given by the formula P = a + b + c. Find P if side a = 5, side b = 12 and side c = 6
What is 23?
y - 4, when y = 5
What is 1?
3y - 5, y = 3
What is 4?
m = 8 , n = 5
4 + m - n
What is 7?
A spy taxi charges a base fare of $15 plus $5 for every kilometer driven (k). The formula is fare = 15 + 5k. Calculate the total fare if the spy drives k = 5 kilometers.
What is $40?
10z, when z = 2
What is 20?
4z + x, when x = 3 and z = 2
What is 11?
(12/h) + 14, when h = 4
The total cost of buying movie tickets for n people is Cost = 12n. If a group of n = (x + z) people go to the cinema, Calculate the total cost when x=2 and z = 3
What is 60?
m/2 when m = 18
What is 9?
20 - 2y, when y = 7
What is 6?
2x + 10, x = 6
What is 22?
Fix the Agent's Blunder! A student was asked to evaluate 4x + 2 when x = 3. The student wrote down the answer as 43 + 2 = 45. Explain what mistake the student made.
The student made a place-value mistake by jamming the 3 next to the 4 instead of multiplying. They forgot that 4x means 4 times x, which results in 4(3) + 2 = 12 + 2 = 14.
25 - f, when f = 17
What is 8?
7x + 2z, when x = 4 and z = 5
What is 18?
a = 7, b = 12 and c = 3
ac - b
What is 9?
The area of a rectangular training field is given by A = L times W. If the Length is L = (y + z) and the Width is W = (x - 1), find the total area when x = 7, y = 6 and z =4
What is 70 sq units?