How do I solve equations by using the substitution method

Define a function f that determines the amount that Nicole pays (in dollars) for gas to drive m miles, given that Nicole's car gets 25 miles per gallon and gas costs $3.20 per gallon.

Which is the better buy? A. 3-yard piece of cotton cloth for $4.41 B. 3-foot piece of cotton cloth for $1.05

Write an equation of the line with the given slope and y intercept: m = 2, b = - 3/4

Which number is relatively prime 9 and 24, 12 and 25, 18 and 39, or 24 and 45

Use f (x) = 1/2 x and f^-1 (x) = 2x to solve the problems F (2) = F^-1 (1) = F^-1 (f (2)) =

14. Favorite School Subject Math 15% Science 20% English 35% History 30% Jenn recorded the favorite school subject of students at her school. She surveyed 700 students. How many more students chose English than Science?

The population of gray wolves in Wisconsin increased from 570 in 2007 to 660 in 2014. Find the percent increase in the wolf population.

Does the table represent an exponential function? Yes or No.

5. George usually hits 5 out of 14 balls he is pitched. If he is pitched 45 balls, how many should he hit?

Find the least common multiple of 6 and 15