Find the equivalent expression

9 (2a + 1)

a. 18a + 1

b. 18a + 9

c. 11a + 10

d. 27a

PQR Is a right triangle. If PQ = 8, what is PR?

How many pounds of nuts selling for $12 per lb and raisins selling for $6 per lb should a person combine to obtain 60 lb of a trail mix selling for $8 per lb

What is the product of 38x$12

A 189 square foot rectangular office has a length of 21 feet. What is the width of the office?

Given: PKHE - inscribed, m∠E=120°, m∠EPK=51°, PF ∥ EH. Find: m∠KPF, m∠H.

A bag contains rubber bands with lengths that are normally distributed with a mean of 6cm of length, and a standard deviation of 1.5cm. What percentage of the rubber bands can be expected to be shorter than 3cm?

You get dressed in the morning without looking at the colours of the clothes you choose. Your shirts are white or blue, your pants are black, red, or yellow, and your shoes are brown or black.

Melissa had 7 pages of homework! She only completed 5 before her soccer practice. Choose the division problem that shows what fraction of pages she finished before practice.

Declan has n baseball cards sam has 4 times as many baseball cards as declan amaya has 7 fewer baseball cards than sam which expression represents the number of baseball cards that amaya has

What does it mean for a number to be irrational?