0.4x + 5.6 < 2.4 Which set of values contains possible solutions for x?

A.
{-9, -12, -13}

B.
{8, 13, 15}

C.
{-8, -13, -15}

D.
{9, 12, 13}

i need help plese and asap

The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.