Write an expression to represent:
Four minus the product of one and a number x

4-1x

Step-by-step explanation:

The product is just 1 times x making it 1x. Also since is says "four minus the product" 4 would come before 1x making the expression 4-1x

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

pls mark as brainliest