Solve each system by substitution

Y = 4x

y = - 4x

Write (2y) ^4 without exponent

What does rise over run mean

What is the difference of 1.7 - (-1.1)

Find the complementary and supplementary angle of an 87° angle

Evan has $0.45 worth of pennies and nickels. He has a total of 21 pennies And Nickels All together. Determine the number of pennies in the number of nickels that Evan has.

The cost is 8.50 an hr. for 1 hr. 13.65 for 2 hrs. 18.80 for 3 hrs. and 23.95 for 4 hrs. if the pattern continues how much will it cost for 6 hrs?

Jimmy measured four pieces of wood. their measures are 4.2 ft, 9/2 ft, 4.02 ft, and 4 2/9 ft. what's the length of the shortest piece

A population of 1236000 grows 1.3%per year. Find the population after 10 years

The first steps in writing f (x) = 3x^2 - 24x+10 in vertex form what is the function written in vertex form

Simplify the following expression. -7x² - 5x-6x² + 4 + 15x