X = cost of children's ticket
x +3 = cost of adults tickets

100x + 200(x+3) = 2100
100x + 200x + 600 = 2100
300x = 1500
x = 5

answer
children ticket costs $5

4 0

3 years ago

A submarine is 45 feet below sea level. The submarine descends 50 feet

rodikova [14]

Answer:

95 feet below sea level

Step-by-step explanation:

8 0

3 years ago

A store is having a sale. A sweater that originally costs $56 is being marked down $14. What is the percent markdown? PLS HALP

34kurt

Answer:

75%

Step-by-step explanation:

divide 14/56 and you should get a decimal:

.25

then subtract that number by 1

=.75= 75%

4 0

3 years ago

Find the Relative Change in the values of the function f(x) = x3 + 2 between x = 1 and x = 2.5 Enter your answer accurate to thr

ehidna [41]

Answer:

9.750

Step-by-step explanation:

formula for average rate of change is ;

f(b)- f(a)/b- a

here a = 1 and b = 2.5

f(b) = (2.5)^3 + 2 = 17.625

f(a) = 1^3+ 2 = 3

using the formula above, we have it that

(17.625-3)/2.5-1 = 9.750

4 0

3 years ago