moby sold half his toy car collection, and then bought 12 more cars the next day. he now has 48 toy cars. how many cars did he have to start with

f (x) = x2-3x-7 find f (-3) a - - 7 b - 8 c - 11 d - 22

Ricky rides his bike 12 miles every day he stops 7 miles to rest write and solve an equation to find out how much further he has

Can a triangle be formed with the sides lengths of 7 cm, 2 cm and 9 cm

How do I do the inverse operation on 151+39=190

How do you devide - 648:9206

The ratio in size of Gabriel's room to her brother Giorgio's room was 5:3. The area of Gabrielle's room was 240 square feet. If Giorgio's room was square-shaped, what was the length of his room?

A student estimates that it would take 3 hours to write a book report, but it actually took her 5 hours. What is the percent error?

Jerry makes 20$ an hour. He spends 30 dollars a day on transportation and food. Write an expression to describe his spending and earnings for the day, where x is the number of hours that Jerry works that day.

Find the percent increase for the given original and new quantities in parts a through c. a. Original quantity: 100 New quantity: 106 b. Original quantity: 10 New quantity: 16 c. Original quantity: 50 New quantity: 56 a.

What is - x^2+12x-32 in standard form?