Factor the following trinomial expression by a method of your choice: 3x2 + 7x-10.
a. (3x + 2)(x - 5)
b. (3x + 5)(x - 2)
c. (3x + 1)(x - 10)
d. (3x + 10)(x - 1)

Me because some of question i don’t understand

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.

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?