Y=-7x+9

5x-y=15

What is the substitution?

Meg mixed 1 part of strawberry juice and 3 parts of lemon juice to make lemonade. How many parts of strawberry juice did Meg mix with each part of lemon juice?

Frankie orders two hamburgers and a soda for lunch. A hamburger is $3 and a soda is $1. Write an expression to show how much he paid for lunch. Then find the value of the expression.

A polynomial function, f (x), with rational coefficients has roots of - 2 and square root of 3. The irrational conjugates theorem states that which of the following must also be a root of the function?

Luis rode his skateboard home from school at an average speed of 15 miles per hour. It took him 0.5 hours to get home. How far from his home is Luis's school? Luis's school is ___ miles from his home.

What is 256 to the 4th power

What is the answer to 3 (k-2) - 6=4k - (3k-1)

The area of a region is sometimes a negative number

The probability that an american industry will locate in shanghai, china, is 0.7, the probability that it will locate in beijing, china, is 0.4, and the probability that it will locate in either shanghai or beijing or both is 0.8.

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f (t) = 8t - 2654, where t is the number of tickets sold. What does the number 8 tell you?

Determine the total amount Victor must repay if he borrows 8000 at %5 simple interest for 3 or.