In a survey of 400 students, 80% said they had math homework every night. Of these, 40% had writing homework every night. How many students had both math and writing every night?

A. 50

B. 128

C. 160

D. 320

A summer camp charges a$25 registration fee plus an additional $ 10 for each day that someone attends the camp. Write an equation that could be used to find the total cost y for someone to attend the camp for any number of days x.

The table represents a function. A 2-column table with 4 rows. The first column is labeled x with entries negative 6, negative 2, 0, 3. The second column is labeled f of x with entries 3, 1, 4, negative 2. What is f (-2) ?

How to write 12 ten thousand

What is (4*2+3*+2) + (5*2+2*-7)

Find u•v when u = 12i+4j and v=15i-5j

Adrienne can make of a bracelet in hour. How many bracelets can she make in 1 hour? 3/4 bracelet 1 bracelet 1 1/3 bracelet 2 bracelets

What's common difference 35,32,29,26

The gcf of the two numbers 14 and 20 is

What is the opposite of running 150 feet east

The least common denominator of 3/10 and 4/5