Solve the problem.When going more than 38 miles per hour, the gas mileage of a certain car fits the model 
where x is the speed of the car in miles per hour and y is the miles per gallon of gasoline. Based on this model, at what speed will the car average 15 miles per gallon? (Round to nearest whole number.)
A. 98 miles per hour
B. 73 miles per hour
C. 149 miles per hour
D. 48 miles per hour
Answer: B
Mathematics
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Divide the polynomial by the monomial.
A. 7x + 6 + 
B. 7x + 6 + 
C. 7x2 + 6 + 
D. 7x2 + 6 + 
Mathematics
Write the trinomial in standard form and then factor completely. If the trinomial cannot be factored, say it is prime.18 + 17x + x2
A. prime B. (x + 9)(x + 2) C. (x + 18)(x + 1) D. (x + 18)(x - 1)
Mathematics
Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Multiply or divide and write scientific notation for the result.(10.83 × 10-4) ÷ (3 × 109)
A. 3.61 × 105 B. 7.22 × 105 C. 3.61 × 10-13 D. 7.22 × 10-13
Mathematics