Is the sum of 4.2 and 2 squared rational or irrational

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?