The distance traveled by a sound wave through a substance is proportional to time. the graph shows this relationship for several substances.

which substances have a unit rate greater than 2 km/s?

choose all answers that are correct.

a.
cork

b.
glass

c.
lead

d.
titanium

Question 3 of 30 paul buys fruit to make smoothies. he buys 3.78 pounds of apples, 2.12 pounds of peaches, and 4.45 pounds of oranges. paul rounds each weight to the nearest tenth of a pound. about how many pounds of fruit did paul buy? (a) 10.5 pounds (b) 10.2 pounds (c) 10.4 pounds (d) 10.0 pounds 30 points

100 points, hi, i’m not sure what to do here,the data doesn’t seem to be quadratic .? can anyone me, in advance

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2