Rewrite the following phrase as a mathematical expression. Rewrite the following phrase as a mathematical expression. three times a number added to fifteen

15n + 3
3n + 15
3 + 15
3(15n)

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.