Twenty seven is smaller than five times a number increased by seven

27 < 5*X + 7 and 4 < X

Explanation: This is an example of phrased mathematics, let's break it into parts:

"twenty seven is smaller than..."

this is easy, is written as:

27 <

"five times a number increased by seven"

here we have 5 times a number, this means a number X multiplied by 5, and after that we increase that number by 7

5*X + 7

putting all togheter, we have:

27 < 5*X + 7

now we can even solve it for X,

first, subtract 7 in both sides.

27 - 7 < 5*X + 7 - 7

20 < 5*X

now, divide by 5 in both sides:

20/5 = 4 < 5*X/5 = X

then we have that 4 < X

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.