Arthur earned $136 in three weeks. He goes back to school in one more week. He needs at least $189 to buy the coat that he wants for school. How much must Arthur earn in the next week?

To " get rid " of a fraction, multiply by the

The yearly profit of a company in thousands of dollars can be modeled by P (t) = t4 - 5t2 + 4, where t is the number of years since 2000. Factor to find the years in which the profit was 0.

The area of a circle is pi (9x2 + 6x + 1) square cm. Find an expression for the length of the circles radius

Kira needs 3,000 milligrams of zinc for a science experiment. Which expression can be used to determine how many grams of zinc she needs? A. 1000:3000 B. 1000*3000 C. 3000:1000 D. 3000*100

Does two radii always form a diameter?

A triangular road sign has a height of 3 feet and a base of 2.5 feet. How much larger in area is this sign than one with a height of 2.5 feet and a base of 3 feet

The volume of a cylinder of radius r and height h is given by V = pi r^2 h. Then the height, in terms of the radius and volume, is given by:

Negative plus positive=?

What expression is equal to the expressions 4x-2 (3x-9)

Brady rode his bike 70 miles in 4 hours. He rode at an average of 17 mph for t hours and at an average rate of speed of 22 mph for rest of the time.