Define a variable and write an equation for each situation. solve each equation to answer the question.

general admission tickets to the fair cost $3.50 per person. ride passes cost an additional $5.50 per person. parking cost $6 for the family. the total for the family $51. how many people in the family attended the fair? ?

p = # of people in the family that attended the fair.

for my equation i made,
3.50p+5.50p+6=51

but cant figure out how to solve it

(9th grade alg 1)
plz work out the problem, thnx : -)

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.