If f (x) varies directly with x and f (x) = 2 when x = 10, then what is the value of f (x) when x = 40?

a. 8

b. 45

c. 200

d. 320

What is the slope of the line perpendicular to the line whose equation is y 3x 4?

At Pinetop middle school, 372 students ride the bus to school. if this number is 60% of school enrollment, then hoe many students are enrolled at the school?

in geometry. the sum of the lengths of the two legs x and y in a triangle must be greater than the hypotenuse c

A paint store sells exterior paint for $28.25 a gallon and paint rollers for $6.25 each. Write an equation in standard form for the number of gallons p of paint and rollers r that a customer could buy with $145.

99% confidence interval for the population standard deviation

7h (67-9x) 7 if h=5 and x=8

Insert commas in the following numbers 13886 365 719463 40047209 2145739180 1783457

Write eighteen hundredths as a decimal.

What's 2+2 = ... ?

Find the product 2cd^4 (-4c^6d^5-c^3d)