What is the value of f ( - 3a), if f (x) = 2x 2 + 4x?

Select one:

a. 9a 2 - 12a

b. 4a 2 - 9a

c. 18a 2 - a

d. 18a 2 - 12a

In a woodworking you are planing boards to make shelves. The planer is set to remove 1/16 inch from a board on each pass the board makes through the planer.

Write the expanded form of 24.357 using fractions or decimal

A recent survey suggests that 85% of adults know what Twitter is. How many adults should you survey in order to be 90% confident that your estimate is within 5% of the true population proportion?

A hot air balloon leaves the ground and ascends at a rate of 6 feet per second for 3 min. then it descends at a rate of 3 feet per second for 2 min. finnally, it ascends at a rate of 4 feet per second of 5 min.

Monica paid sales tax of $1.20 when she bought a new bike helmet. If the sales tax rate was 6%, how much did the store charge for the bike helmet before tax?

Which angle is an exterior angle of the triangle?

What's the lowest common multiple of 8 and 4

Becky purchased a home entertainment center for $2,254 using an 18-month deferment plan with an interest rate of 22.48% make any payments during the deferment.

Write the answer in standard form f (x) = - x ^2-2x+8

Name a fraction between 1/3 and 2/3