The scatter plot below shows the number of pizzas sold during weeks when different numbers of coupons were issued. the equation represents the linear model for this data.

y = 3.4x + 43

according to the model, what is the average number of pizzas sold in one night if no coupons are issued?

a. 0

b. 21

c. 43

d. 60

e. 70

On the way home from visiting his family, vincent’s plane cruised at an altitude of 3.2 × 10^4 feet. he had heard that a man named felix baumgartner skydived from an altitude of 1.28 × 10^5 feet. vincent wants to know how much higher felix went on his skydiving trip. question 1 you have already seen how adding numbers works in either scientific notation or standard notation. but can you subtract numbers in scientific notation and get the same results as subtracting in standard notation? to find out, first solve vincent’s problem in standard notation. part a write the cruising altitude of vincent’s plane in standard notation.

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2

Which pair of expressions is equivalent? a 7(1–k)and7–k b 7(1–k)and1–7k c 7(1–k)and7–k d 7(1–k)and7–7k