Camila is putting together gift bags for nurses at a local clinic. Each of the 5 gift bags contains 'x' cookies. Camila adds 3 more cookies to each bag. Altogether, the gift bags contain 20 cookies.
a. Write an equation to represent the situation.

b. Solve the equation.

c. Explain what your solution means in the story. (what does "x" represent)

a. 20 = 5x + 15

b. x = 1

c. X represents the number of cookies before three more were added to each bag.

Step-by-step explanation:

a. 20 is your total, or y. 5 is the amount of bags, with "x" cookies. Three more cookies are added to EACH bag, so 3*5 is 15. If you do it in slope-intercept form, the equation is 20(y)= 5x + 15 (added cookies).

b. 20 = 5x + 15

20 - 15 = 5x + 15 - 15

5 = 5x

5/5 = x

x = 1

c. Remember that x is the amount of cookies in each bag before three more were added. If you add the amount before more were added (1), and the amount added (3), you get 4. Then, you multiply the total amount of cookies in each bag and the number of bags (4*5), you get 20, which the problem says is the total number of cookies in all the bags.

hope this helps :)

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute: