Solve: - 15b + 21 + 5b = -19

11. The temperature at noon is 75°F. The temperature drops 3 degrees every half hour. What is the temperature at 4 P. M.?

What is the solution of the equation Y+1/2=3/4

Solve the problem. 3) At a track meet with 135 participants, 25 participate in jumping events, of these jumpers are female, and of the total participants are female.

Simplify the expression. 2√5 · √19

in one day in, Annie traveled five times the sum of the number of hours Brian traveled and 2. together the travel 20 hours. find the number of hours each person traveled.

Out of the last 50 guest, only 1 of them brought a coupon for free admission to the carnival. If there are 1500 guests expected this weekend, how many can we except will receive free admission

If f (x) = - x + 4 and g (x) = x^2 - 5, then g (f (3)) = ? A) - 8 B) - 4 C) - 3 D) 0

F K = (x, y), is Set K a function?

70% of the 100 students in Middle School cafeteria bought their lunch some of the students that bought their lunch leave the cafeteria to attend an assembly now only 60% of the remaining students brought their lunch how many students are remaining

What percent of 150 equals 24.9