Please help with these 2 questions I’m so close to getting this done!

Step-by-step explanation:

11) A

The ratio of texts sent to calls made was 8:5.

12)

Noah 4 scoops of powder with 6 cups of water

4/6*100%=66.67%

Andre mixes 5 scoops of powder with 8 cups of water.

5/8*100%=62.5%

it can be seen that Noah's mixture have a stronger orange taste with a concentration of 66.67% while andre's mixture has a concentration of 62.5%.

4th option is correct xy=-10

if this was to u plzz mark me the brainliest

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50