1. 34.61; tax 72. 34.61; sale 15% off3. 34.61; markup 35%4. 34.61; tip 20%i know it's a lot, but i'd be very appreciative to the person who solves this

37.03, 29.42, 46.72, 41.53

Step-by-step explanation:

I'm assuming 1 means tax 7% and 7% in decimals is 7/100 = 0.07.  Now the original amount is 34.61 meaning that that is 100%, and 100% in decimals is 100/100 = 1.  So easy way of doing these is:

1.) 34.61 + 7% tax = 34.61(1+.07)=34.61(1.07) = 37.03

2.) 34.61 - 15% = 34.61(1-0.15) = 34.61(0.85) = 29.42

3.) 34.61 + 35% = 34.61(1+0.35) = 34.61(1.35) = 46.72

4.) 34.61 + 20% = 34.61(1+0.20) = 34.61(1.20) = 41.53

Note that I did round to the nearest cent since we don't have a coin less than a penny.

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.