Mrs. Butter is a wonderful baker and she makes delicious cookies, Last Saturday she sold 72 peanut harger cookies. She also sold seme oatmeal cookies. If the ratio of peanut butter cookies sold to oatmeal okies sold was 9:1. how many peanut butter and oatmeal cookies did she sell altogether?

she sold 8 oatmeal cookies

total = 72+8=80 cookies sold

Step-by-step explanation:

72 at a 9:1 ratio, would be 72:8

so she sold 8 oatmeal cookies

total = 72+8=80 cookies sold

Further explanation:

for every 9 PB cookies she sold, she sold one OM cookie.

She sold 72 PB cookies, so she sold 8 OM cookies because 72/9=8.

step-by-step explanation:

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is