Solve.The sum of the squares of the digits of a positive two-digit number is 13, and the units digit is 1 more than the tens digit. Find the number.

A. 23
B. 32
C. 34
D. 43

Answer: A

Mathematics

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Find a general term an for the geometric sequence.a1 = 2, r = 

A. an = 2 ? n-1

B. an = 2 - (n - 1)
C. an = 2n-1 - 
D. an = 2 + (n - 1)

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Mathematics

Match the system of inequalities with a graph.4y - x ? 2,y + 3x ? 4,y ? 0

A.

B.

C.

D.

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Mathematics

Simplify the expression. Write your answer without negative exponents. Whenever an exponent is negative or zero, assume that the base is not zero.

A.
B. x24
C. x4
D. x10

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Mathematics

Solve the problem. Assume that all pizzas are circular in shape and that the measurement given in the table is the diameter of the pizza in inches. Use 3.14 as the approximate value of ?. Use the table below to find the cost per square inch for each size of veggie pizza. Round your answers to the nearest thousandth. Which size is the best buy?  Cheese$4.20$7.20$10.70Veggie$5.70$7.50$16.00Pesto$5.80$10.30$13.90  

A.

Small ? $0.113
Medium   ? $0.066
Large     ? $0.104
Best buy: medium
B.
Small ? $0.028
Medium   ? $0.017
Large     ? $0.026
Best buy: medium
C.
Small ? $0.227
Medium   ? $0.199
Large     ? $0.364
Best buy: medium
D.
Small ? $8.814
Medium   ? $15.072
Large     ? $9.616
Best buy: small

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Mathematics