Which expression is modeled by this arrangement of tiles?

30 - (-30)

30 - (-3)

30-3

30-30

1. expand and simplify 2 (x-4) - 3 (x-2) 2. factorise a^2 + a

Find the work done lifting a 290-pound weight 28 feet in the air.

Write a decimal between 0.5 and 0.75. Then write it as a fraction in simplest form and as a percent

6) Which is the best deal? 3.45 lbs for $3.58 $10.23 for 10.43 lbs

The production rate of a steel factory is declining due to old machinery. Over the last eight days production has dropped by 1.2 tons. What is the average rate of change in steel production over the eight days? Express the answer in tons per day.

a truck traveled 8 hours at an average speed of 55 mph. how far did the truck travel? (distance = rate x time)

Darla drives at a constant speed of 45 miles per hour. a. If she drives for y miles and it takes her x hours, write the two-variable equation to represent the number of miles Darla can drive in x hours b.

Substitute x=5 and y = 7 for the algebraic expression 24x-3) + 6 (3y-5) and evaluate the expression

In a region there is a. 95 probability chance that a randomly-selected person of the population has brown eyes assume 12 people are randomly selected

4b - 5 = - t, solve for b