Solve the problems.Mary and her brother John collect foreign coins. Mary has twice the number of coins that John has. Together they have 90 foreign coins. Find how many coins Mary has.
A. 12 coins
B. 60 coins
C. 30 coins
D. 54 coins
Answer: B
Mathematics
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Solve the problem.A private shipping company will accept a box for domestic shipment only if the sum of its length and girth (distance around) does not exceed 90 in. What dimensions will give a box with a square end the largest possible volume?
A. 15 in. x 15 in. x 30 in. B. 15 in. x 15 in. x 75 in. C. 30 in. x 30 in. x 30 in. D. 15 in. x 30 in. x 30 in.
Mathematics
Find the area that the curve encloses.
 FIGURE 1.png)
Mathematics
Evaluate the expression.Three squared plus nine
A. 84 B. 18 C. 78 D. 9
Mathematics
Solve. Round any approximate solution to the fourth decimal place.9(5)x = 39
A. 0.9624 B. -0.1431 C. 0.9111 D. 2.1133
Mathematics