Bobby and John earn the same hourly wage of $7 per hour. John earned $21 in overtime this week. Let x represent the number of hours Bobby worked this week and let
y represent the number of hours John worked this week. Which expression would NOT
represent their wages for the current week?
O A. (7x) + (7y + 21)
OB. 7(x + y) + 21
OC. 7(x + y + 21)
OD. 7x + 7y + 21

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212