Me with these i will mark you brainliest if right

The first triangle’s area is 48.75. But since you round it to the nearest tenth, it’s 48.7.

Use the formula a=1/2bh to find the area of a triangle.
A= 1/2• 13 • 7.5
A= 6.5• 7.5
A= 48.75 —-> 48.7 square inches.

Sorry, I can only do one because of homework, but make sure to use that formula! Hope this helped.

Ican't do any of the other stuff, but i can get you started. the answer, i believe, is $2.50.

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!