During a recent blood drive, 18 donors had type o blood. This was 45% of the total number

of donors who gave blood that day. How many donors participated in the blood drive?

Gina bought one pound of cheese and used 1414 of it. She split apart the remaining cheese into 55 equal parts to eat for lunch each day during the week. Which expression represents the cheese Gina will eat for lunch each day?

Bobby the plumber charges $90 for a house visit and $55 an hour for any time he spends over 30 minutes. Write an algebraic expression that represents the cost of a house visit for h hours. Then simplify your expression.

Given a circle with measures of (C, d, and r) and a circle with measures of (C', d', and r'), what is r' if C/C' = 0.75 and d = 6.0?

Keeli was asked to approximate the square root of 38 to the nearest whole number. Her work is shown here. Analyze her work, describing what she did correctly and what she did incorrectly.

Which equation is equivalent to 12*x + 15 = 36? *x+15 = 3 x + 15 = 9 Ox+15 = - 6 3x + 15 = 24

Which ordered pair is a solution of the equation? 2x+3y=10?

Two less than the product of a number and - 5 is - 42

A plane flies from New York to Los Angleles at a constant speed of 800 km/hr. If the distnace from New York to Los Angeles is 4000 km how long will it take the plane to fly that distance?

Anna bought a sandwich for 2.49 and a drink for 1.55. She gave the clerk 5.05. How much change should she get back?

One linear expression is subtracted from a second linear expression and the difference is x-5. What is the difference when the second linear expression is subtracted from the first?