Use the FOIL method to find the product. Express the product in descending powers of the variable.(7 + 5x)(2 + 3x)
A. 8x2 + 31x + 14
B. 15x2 + 31x + 31
C. 15x2 + 31x + 14
D. 8x2 + 31x + 31
Answer: C
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Multiply or find the special product.
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Use a system of linear equations to solve the problem.Molly is training for a biathlon. Each weekend she bicycles and runs to prepare for the race. She cycles at a rate of 12 mph and runs at a rate of 5 mph. If she spends 6.5 hours bicycling and running and covers a total of 57 miles, how much time did she spend on each?
A. Bicycling: 3.5 hr, Running: 5 hr B. Bicycling: 3.5 hr, Running: 3 hr C. Bicycling: 4.5 hr, Running: 3 hr D. Bicycling: 3 hr, Running: 3.5 hr
Find the values of the variables for which the statement is true, if possible.
= 
A. a = -7; b = 5; q = 0 B. a = -5; b = 7; q = 0 C. a = 0; b = 0; q = 0 D. a = 5; b = -7; q = 0
Provide an appropriate response.Expand: (3x + y)4
What will be an ideal response?