18. on a road in the city of madison, the maximum speed is 45 miles per hour and the minimum speed is 35 miles per hour.
let x represents the speed. you can write two inequalities to represent the speed restrictions.
massimum speed is 45 mph minimum speed is 35 mph
x545
x 35
the inequalities as 45 and 235 can be combined and can be written without using and
35 s7545
a. explain how compound inequalities can be use to describe the speed restrictions on roads.
b. include a compound inequality describing a possible age restriction for driving on roads. describe what this represents.
(minimum driving age is 16 years, and most drivers stop renewing their licenses by age 100.)

both graphs increase on their domain

neither graph has a y-intercept

step-by-step explanation:

the following points can be visualized easily from the graph

delaney would like to make a 5lb nut mixture that is 60% peanuts and 40% almonds.

she has several pounds of peanuts and several pounds of a mixture that is 20% peanuts and 80% almonds.

let 'p' represent the number of pounds of peanuts needed to make the new mixture, and  

let 'm' represent the number of pounds of the 80% almond-20% peanut mixture.

:

p + m = 5

therefore

m = (5-p)

write an equation based on the percent of peanuts

1p + .2m = .6(5)

replace m with (5-p)

p + .2(5-p) = .6(5)

p + 1 - .2p = 3

p - .2p = 3 - 1

.8p = 2

p = 2/.8

p = 2.5 lbs of peanuts required

then

5 - 2.5 = 2.5 lbs of the peanut/almond mixture required

:

a) what is the system that models this situation?

p + m = 5

1p + .2m = .6(5)

i those same problems in math and dont know how to do them