Compute the discriminant. Then determine the number and type of solutions for the given equation.x2 + 7x + 6 = 0
A. 25; two unequal real solutions
B. 0; one real solution
C. -73; two complex imaginary solutions
Answer: A
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Solve the problem.The present value that will give a future value S in 4 years with interest compounded annually varies inversely as the fourth power of 1 + r, where r is the annual interest rate. If the present value of $3.71 gives a future value of $5000, what would be the present value of $10,000? Round to the nearest dollar.
A. $45 B. $7 C. $8 D. $5
Solve the problem.A camera costs $600. If the sales tax rate is 7%, how much tax is charged and what is the total price? Round your answers to the nearest cent.
A. $420.00, $1020.00 B. $42.00, $642.00 C. $48.00, $648.00 D. $36.00, $636.00
Multiply.7 ? (-5) ? 12 ? (-13)
A. -407 B. -5,460 C. 5,460 D. 1
Translate the phrase into a mathematical expression and then simplify. Use x as the variable.Seven times a number squared, added to the two times the same number squared.
A. 2x + 7x; 9x B. 7x2 + 2x2; 9x2 C. 7x + (x + 2); 8x + 2 D. 7x + x; 8x