Chapter 1Practice Test Question 13 14.
You are biking at a speed of 18 miles per hour. You are 3 miles behind your friend,
who is biking at a speed of 12 miles per hour. Write and solve an equation to find the
amount of time x it takes for you to catch up to your friend.
hour

Solve the system of equations. y= 2x y= x^2 - 15

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.