Number 1 please and number 5 i know that y =x is the starter for number 5 but I don’t know can someone help me please!? :)

unit rate = 43.75 miles per hour

Step-by-step explanation:

This is a fraction equal to

175 miles ÷ 4 hours

We want a unit rate where 1 is in the denominator, so we divide top and bottom by 4

(175 miles ÷ 4)/(4 hours ÷ 4)

= 43.75 miles per hour

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

b.-4 units

all you   do is count how many times you move