Solve to find the value of n -5 + 5 (n - 7) = -40 + 5n
a. n = 8
b. n = -8
c. many solutions
d. no solutions

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?

Determine the area of a triangle with (see picture below)