Solve the problems.
which expressions can be used to find the total amount that must be repaid on a
1-year loan of d dollars with 4% simple interest rate?
choose all that apply.
a.
1.04d
b. d+ 0.40
c. d + 7/30
d. d + 0.040
e. d + 1.040

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0