Can anyone me with the explanation and the work for the second one?

I would put that it is a unit rate problem because for every certain amount of flour there is a certain amount of salt

Step-by-step explanation:

And I would just draw that out and if you actually have to answer how many cups of salt than just draw the table like you did on #1

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.